Calculators
Inheritance tax calculator
Estimate potential inheritance tax liability based on the value of your estate.
Estate Assets
£
£
£
Liabilities & Exemptions
£
£
Reliefs & Allowances
Married / Civil Partner
Transfer unused nil-rate band from spouse
+£325k
Residence Nil-Rate Band
Leaving main home to direct descendants
+£175k
Spouse RNRB Transfer
Transfer unused RNRB from deceased spouse
+£175k
10%+ Left to Charity
Reduces IHT rate from 40% to 36%
36% rate
Business Property Relief
100% relief on qualifying business assets
100% off
Agricultural Property Relief
Relief on qualifying agricultural property
100% off
IHT Estimate
IHT Due
—
at 40% on taxable estate
Estate to Beneficiaries
—
after tax
Gross Estate
—
before reliefs & tax
Estate breakdown
Debts & exemptions
Nil-rate band (£325k)
RNRB allowance
Taxable at 40%
Estate Calculation
Property value—
Savings & investments—
Less: outstanding debts—
Net chargeable estate—
Allowances & Thresholds
Nil-rate band£325,000
Spouse transferred NRB—
Residence nil-rate band—
Spouse transferred RNRB—
Total tax-free threshold—
Taxable above threshold—
IHT rate applied—
Inheritance tax due—
IHT Planning Considerations
This calculator uses 2025/26 HMRC thresholds: nil-rate band £325,000; residence nil-rate band £175,000. It provides an illustrative estimate only and does not constitute financial or legal advice. IHT rules are complex — factors such as trusts, business relief, taper relief on gifts, and domicile status can significantly affect your liability. Always consult a qualified financial adviser or solicitor for personalised estate planning guidance.
These calculators provide illustrative estimates only and do not constitute financial advice. Results should not be relied upon for financial decision-making, as individual circumstances vary.